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Finding the Fourth Proportional to 66,465.04, 99,569.60 and 52,350.40

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Solution

The fourth proportional to 66,465.04, 99,569.60 and 52,350.40 is: 78,424.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,465.04 : 99,569.60 = 52,350.40 : x
  2. Step 2: Convert to fraction form
    66,465.04/99,569.60 = 52,350.40/x
  3. Step 3: Cross multiply
    66,465.04x = 99,569.60 × 52,350.40
  4. Step 4: Simplify right side
    66,465.04x = 5,212,508,387.84
  5. Step 5: Solve for x
    x = 5,212,508,387.84/66,465.04
  6. Step 6: Final answer
    x = 78,424.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.